An experimental design study compared the effect of periodic use of the "Geometric Supposers" software to nonuse on geometry achievement of two tenth grade classes (n=58). Results suggest that "Geometric Supposers" promotes higher achievement, particularly on Higher Level and Application Problems. No difference on Lower Level…

Investigates effect of computer-aided instruction (CAI) on acquisition of communication skills. Sketches a tutorial of the basic communication structure. Recommends confining CAI to cognitive learning because CAI cannot advance communication skills. Maintains that integrating CAI in social arrangements will allow the computer to remain an…

Explorer is an interactive environment based on a constructivist epistemology of learning that integrates animated computer models with analytic capabilities for learning science. The system includes graphs, a spreadsheet, scripting, and interactive tools. Two examples involving the dynamics of colliding objects and electric circuits illustrate…